Regulating phosphate and nitrate is essential. Algae can grow rapidly and become problematic when these parameters are too high whereas levels that are too low will starve corals and disrupt biological processes. Enjoy hassle-free testing and incorporate our Marine Algae and Nutrient Management Kit as part of your reef tank maintenance routine.
Features
- Saltwater compatible
- Checkers®HC are dedicated to a single parameter
- A great alternative to chemical test kits
- Digital readouts appear on large LCD screens
- Pocket-sized, lightweight
- Easy-to-use, convenient
- Requires little maintenance
- Comes as a complete algae and nutrient management kit
- Be ready to test right out of the box with all necessary reagents, accessories, and batteries
- Auto shut-off conserves battery energy
- Phosphate range: 0.00 to 0.90 ppm
- Nitrate range: 0.0 to 75.0 ppm (as NO3-)
| Specification |
Detail |
| Phosphate Ultra Low Range (ULR) |
0.00 to 0.90 ppm |
| Phosphate ULR Resolution |
0.01 ppm |
| Nitrate High Range (HR) |
0.0 to 75.0 ppm (as NO3) |
| Nitrate HR Resolution |
0.1 ppm |
| Phosphate ULR Accuracy @ 25°C (77°F) |
±0.02 ppm ±5% of reading |
| Nitrate HR Accuracy @ 25°C (77°F) |
±2.0 ppm ±5% of reading |
| Light Source |
Light Emitting Diode @ 525 nm |
| Light Detector |
Silicon photocell |
| Phosphate ULR Method |
Adaptation of Standard Methods for the Examination of Water & Wastewater, 20th Edition, Ascorbic Acid Method.
The reaction between phosphate and the reagent causes a blue tint in the sample. |
| Nitrate HR Method |
Zinc reduction method. The reaction between nitrate and the reagent causes a pink tint in the sample. This checker has been developed to work with seawater samples. |
| Battery Type |
1.5V AAA Alkaline |
| Phosphate ULR Auto Shut-Off |
After 7 minutes of non-use and 2 minutes after reading |
| Nitrate HR Auto Shut-Off |
After 10 minutes of non-use |
| Environment |
0 to 50 °C (32 to 122 °F); max. RH 95% non-condensing |
| Dimensions |
86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5") |
| Weight |
64 g (2.3 oz) |
| Nitrate HR Interferences |
Nitrite |
| Reagent Sets |
HI774-25 (25 tests for Phosphate ULR) / HI782-25 (25 tests for Nitrate HR) |
| Calibration Check |
HI774-11 for Phosphate ULR / HI782-11 for Nitrate HR |
| Warranty |
1 year |
What's included
| Marine Phosphate Ultra Low Range Checker®HC (HI774) supplied with protective case |
| Marine Phosphate Ultra Low Range reagents for 35 tests |
| Marine Nitrate High Range Checker®HC (HI782) supplied with protective case |
| Marine Nitrate High Range reagents for 35 tests |
| Sample cuvette and cap (4 pcs.) |
| 3 mL Pasteur pipette (1 pc.) |
| 1.5V AAA Alkaline batteries (2 pcs.) |
| Instruction manuals |
